Micromagnetic Simulations of Spin Waves in Nanowires with Perpendicular Anisotropy

摘要

Spin wave propagation in ferromagnetic nanowires has the potential to be used in logic operations as demonstrated in recent report. By micromagnetic modeling simulations, we investigated the spin wave properties in nanowires with perpendicular magnetization having various linewidths, and compared the results of nanowires with parallel magnetization. It was shown that periodic modulation of nanowire width has great influence on spin-wave propagation behavior; especially in low frequency (< 10GHz) range. To study the stability of spin waves, we added a perpendicular magnetic anisotropy (PMA) in our simulation as in the experimentally cases of Co/Ni and Co/Pt PMA multilayers.